Electromagnetic field simulation analysis of permanent magnet canned pump
1.School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China; 2.Research Center of Fluid Machinery Engineering and Technology, Jiangsu University, Zhenjiang, Jiangsu 212013, China; 3.Shanghai Apollo Machinery Company Limited, Shanghai 201401, China)
Abstract：In order to improve the performance of canned motor pump and shorten the design period, the numerical simulation of permanent magnetic canned motor was conducted by Ansoft. Two different built-in magnetic circuit structures of the magnetic canned pump were compared to analyze the influences of gap and shielding sleeve parameters on the permanent magnetic canned motor. A reasonable and improved design of shielding sleeve was proposed for the magnetic circuit structure with inverted U-shape. The distribution of magnetic vortex in stator and rotor shielding sleeves was investigated. The magnetic vortex losses with four shielding sleeve materials were solved. The results show that the magnetic vortex distribution in the shielding sleeves is symmetric. The magnetic vortex distribution in the stator shielding sleeve was relatively concentrated with higher magnetic vortex loss than that of the rotor shielding sleeve. The shielding sleeve with HASTELLOY-C material can obtain low magnetic vortex loss to meet the design requirements.
2012, Vol. 33 
